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	   <h2>Color.js</h2>
	
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<h4>Summary</h4>
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		No overview generated for 'Color.js'<BR/><BR/>
	
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    <td width="15%"><b><a href="draw2d/Color.html">draw2d.Color</a></b></td>
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        <pre class="sourceview"><span class="comment">/* This notice must be untouched at all times.

FreeGroup Draw2D 0.9.26
The latest version is available at
http://www.freegroup.de

Copyright (c) 2006 Andreas Herz. All rights reserved.
Created 5. 11. 2006 by Andreas Herz (Web: http://www.freegroup.de )

LICENSE: LGPL

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (LGPL) as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA,
or see http://www.gnu.org/copyleft/lesser.html
*/</span>

<span class="comment">/**
 * 
 * <span class="attrib">@version</span> 0.9.26
 * <span class="attrib">@author</span> Andreas Herz
 * <span class="attrib">@constructor</span>
 */</span>
draw2d.Color=<span class="reserved">function</span>(<span class="comment">/*:int*/</span> red,<span class="comment">/*:int*/</span> green ,<span class="comment">/*:int*/</span> blue)
{
  <span class="reserved">if</span>(typeof green == <span class="literal">"undefined"</span>)
  {
    var rgb = <span class="reserved">this</span>.hex2rgb(red);
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.red= rgb[0];
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.green = rgb[1];
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.blue = rgb[2];
  }
  <span class="reserved">else</span>
  {
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.red= red;
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.green = green;
    <span class="comment">/** <span class="attrib">@private</span> **/</span>
    <span class="reserved">this</span>.blue = blue;
  }
};
<span class="comment">/** <span class="attrib">@private</span> **/</span>
draw2d.Color.<span class="reserved">prototype</span>.type=<span class="literal">"draw2d.Color"</span>;

<span class="comment">/**
 * <span class="attrib">@private</span>
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.getHTMLStyle=<span class="reserved">function</span>()
{
  <span class="reserved">return</span> <span class="literal">"rgb("</span>+<span class="reserved">this</span>.red+<span class="literal">","</span>+<span class="reserved">this</span>.green+<span class="literal">","</span>+<span class="reserved">this</span>.blue+<span class="literal">")"</span>;
};

<span class="comment">/**
 * Return the [red] part of the color.
 * <span class="attrib">@type</span> int
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.getRed=<span class="reserved">function</span>()
{
  <span class="reserved">return</span> <span class="reserved">this</span>.red;
};


<span class="comment">/**
 * Return the [green] part of the color.
 * <span class="attrib">@type</span> int
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.getGreen=<span class="reserved">function</span>()
{
  <span class="reserved">return</span> <span class="reserved">this</span>.green;
};


<span class="comment">/**
 * Return the [blue] part of the color.
 * <span class="attrib">@type</span> int
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.getBlue=<span class="reserved">function</span>()
{
  <span class="reserved">return</span> <span class="reserved">this</span>.blue;
};

<span class="comment">/**
 * Returns the ideal Text Color. Usefull for font color selection by a given background color.
 *
 * <span class="attrib">@returns</span> The &lt;i&gt;ideal&lt;/i&gt; inverse color.
 * <span class="attrib">@type</span> draw2d.Color
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.getIdealTextColor=<span class="reserved">function</span>()
{
   var nThreshold = 105;
   var bgDelta = (<span class="reserved">this</span>.red * 0.299) + (<span class="reserved">this</span>.green * 0.587) + (<span class="reserved">this</span>.blue * 0.114);
   <span class="reserved">return</span> (255 - bgDelta &lt; nThreshold) ? new  draw2d.Color(0,0,0) : new  draw2d.Color(255,255,255);
};


<span class="comment">/**
 * <span class="attrib">@private</span>
 */</span>
draw2d.Color.<span class="reserved">prototype</span>.hex2rgb=<span class="reserved">function</span>(<span class="comment">/*:String */</span>hexcolor)
{
  hexcolor = hexcolor.replace(<span class="literal">"#"</span>,<span class="literal">""</span>);
  <span class="reserved">return</span>(
         {0:parseInt(hexcolor.substr(0,2),16),
          1:parseInt(hexcolor.substr(2,2),16),
          2:parseInt(hexcolor.substr(4,2),16)}
         );
};

<span class="comment">/**
 * <span class="attrib">@private</span>
 **/</span>
draw2d.Color.<span class="reserved">prototype</span>.hex=<span class="reserved">function</span>()
{ 
  <span class="reserved">return</span>(<span class="reserved">this</span>.int2hex(<span class="reserved">this</span>.red)+<span class="reserved">this</span>.int2hex(<span class="reserved">this</span>.green)+<span class="reserved">this</span>.int2hex(<span class="reserved">this</span>.blue)); 
};

<span class="comment">/**
 * <span class="attrib">@private</span>
 */</span>
draw2d.Color.<span class="reserved">prototype</span>.int2hex=<span class="reserved">function</span>(v) 
{
  v=Math.round(Math.min(Math.max(0,v),255));
  <span class="reserved">return</span>(<span class="literal">"0123456789ABCDEF"</span>.charAt((v-v%16)/16)+<span class="literal">"0123456789ABCDEF"</span>.charAt(v%16));
};

<span class="comment">/**
 * Returns a darker color of the given one..
 * 
 * <span class="attrib">@param</span> {float} fraction  Darkness fraction.
 * <span class="attrib">@return</span>        Darker color.
 * <span class="attrib">@type</span> draw2d.Color
 */</span>
draw2d.Color.<span class="reserved">prototype</span>.darker=<span class="reserved">function</span>(<span class="comment">/*:float*/</span>fraction)
{
   var red   = parseInt(Math.round (<span class="reserved">this</span>.getRed()   * (1.0 - fraction)));
   var green = parseInt(Math.round (<span class="reserved">this</span>.getGreen() * (1.0 - fraction)));
   var blue  = parseInt(Math.round (<span class="reserved">this</span>.getBlue()  * (1.0 - fraction)));

   <span class="reserved">if</span> (red   &lt; 0) red   = 0; <span class="reserved">else</span> <span class="reserved">if</span> (red   &gt; 255) red   = 255;
   <span class="reserved">if</span> (green &lt; 0) green = 0; <span class="reserved">else</span> <span class="reserved">if</span> (green &gt; 255) green = 255;
   <span class="reserved">if</span> (blue  &lt; 0) blue  = 0; <span class="reserved">else</span> <span class="reserved">if</span> (blue  &gt; 255) blue  = 255;

   <span class="reserved">return</span> new draw2d.Color(red, green, blue);
};


<span class="comment">/**
 * Make a color lighter.
 * 
 * <span class="attrib">@param</span> {float} fraction  Darkness fraction.
 * <span class="attrib">@type</span> draw2d.Color
 * <span class="attrib">@return</span>          Lighter color.
 */</span>
draw2d.Color.<span class="reserved">prototype</span>.lighter=<span class="reserved">function</span>(<span class="comment">/*:float*/</span> fraction)
{
    var red   = parseInt(Math.round (<span class="reserved">this</span>.getRed()   * (1.0 + fraction)));
    var green = parseInt(Math.round (<span class="reserved">this</span>.getGreen() * (1.0 + fraction)));
    var blue  = parseInt(Math.round (<span class="reserved">this</span>.getBlue()  * (1.0 + fraction)));

    <span class="reserved">if</span> (red   &lt; 0) red   = 0; <span class="reserved">else</span> <span class="reserved">if</span> (red   &gt; 255) red   = 255;
    <span class="reserved">if</span> (green &lt; 0) green = 0; <span class="reserved">else</span> <span class="reserved">if</span> (green &gt; 255) green = 255;
    <span class="reserved">if</span> (blue  &lt; 0) blue  = 0; <span class="reserved">else</span> <span class="reserved">if</span> (blue  &gt; 255) blue  = 255;

    <span class="reserved">return</span> new draw2d.Color(red, green, blue);
};
</pre>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Mon Nov 14 13:45:39 2011</div>
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